Fry rearing system and method using a factory-like recirculating water facility

Abstract

The present application provides a kind of fish fry cultivation system and method using factory circulating water facilities, it is related to aquaculture technical field, system provides suitable growth space for fish breeding by breeding module, multiple culture bins realize water changing operation, and when water changing, fish fry and water can be replaced simultaneously, to facilitate the maintenance and cleaning of culture bin, push net (126) is arranged in push frame (125), and detachably connected with push frame (125), so that the present application is convenient for later cleaning, maintenance and replacement of push net (126), reduce the later maintenance cost of the present application, and, the mesh of push net (126) is distributed as upper dense lower sparse, upper dense mesh can slow down water flow speed, avoid fish fry being impacted by high-speed water flow and cause abrasion or stress, lower sparse mesh can allow rapid drainage, form stratified flow from top to bottom, reduce the entrainment effect of fish fry by vortex, which makes the present application can reduce or even avoid the situation of fish fry injury when water changing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aquaculture, in particular to a fish fry cultivation system and method using a factory circulating water facility. BACKGROUND

[0002] The factory circulating water cultivation of fish fry utilizes water circulation in a closed system, combined with advanced filtration, oxygenation and water quality control technology, to provide a stable and suitable growth environment for fish fry. This method not only improves the survival rate and growth rate of fish fry, but also significantly reduces water resource consumption and environmental pollution.

[0003] However, the existing fish fry cultivation system using a factory circulating water facility is prone to fish fry damage during water change, and also has the problem of high maintenance cost in the later stage of the system. SUMMARY

[0004] Therefore, in order to solve the above technical problems, the present application provides a fish fry cultivation system and method using a factory circulating water facility.

[0005] The present application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a fish fry cultivation system using a factory circulating water facility, comprising: a central control module, a fry rearing module (1), a water quality treatment module (2), an environmental control module (3) and a feeding module (4);

[0007] The fry rearing module (1) is used to accommodate fish fry and provide suitable growth space, and at least includes a fry rearing assembly, which comprises a fixed bin (11) fixed to the ground, and a fry rearing tank (12) removably installed in the fixed bin (11). The fry rearing tank (12) is in communication with the water quality treatment module (2). The water quality treatment module (2) at least includes a water pump (21), a circulating water tank (22) and four filter assemblies (23). The filter assemblies (23) are in communication with the fry rearing tank (12) through the water pump (21). The inlet of the circulating water tank (22) is in communication with the filter assemblies (23), and the outlet of the circulating water tank (22) is in communication with the fry rearing tank (12) through the water pump (21). The central control module is used to control the working state of the water pump (21);

[0008] The rearing pond (12) comprises a rearing bin (121), a partition plate (122), a pushing motor (123), a pushing frame (125), a pushing net (126) and an auxiliary water pumping assembly; the rearing bin (121) is fixed in the fixed bin (11); the partition plate (122) is configured as two and arranged in a cross shape in the rearing bin (121), so that the rearing bin (121) is divided into four rearing bins, and a water pumping opening is formed in the bottom of each of the four rearing bins and communicated with the filtering assembly (23); the pushing motor (123) is configured as two and symmetrically fixed on the partition plate (122); the pushing frame (125) is slidingly arranged in the rearing bin and driven by the pushing motor (123); the pushing net (126) is arranged in the pushing frame (125) and detachably connected with the pushing frame (125), and the mesh of the pushing net (126) is arranged in a distribution of dense upper and sparse lower, and the diameter of any mesh is smaller than the passing diameter of the fry; the auxiliary water pumping assembly is installed on the inner wall of the rearing bin and communicated with the filtering assembly (23); and the central control module is further used for controlling the working state of the pushing motor (123).

[0009] The water quality treatment module (2) is used for performing deep treatment on the circulating water in response to the control instruction of the central control module, so as to ensure that the water quality is always kept in the best state.

[0010] The environment control module (3) is used for accurately controlling the water temperature, pH value and dissolved oxygen, which are key parameters, in response to the control instruction of the central control module, so as to provide the most suitable growth environment for the fry.

[0011] The feeding module (4) is used for realizing precise feeding in response to the control instruction of the central control module, and feeding the feed in a timely and quantitative manner according to the growth demand and nutritional demand of the fry.

[0012] Optionally, the number of the pushing nets (126) is multiple.

[0013] The mesh densities of different pushing nets (126) are different.

[0014] Optionally, the surface of the pushing net (126) is sprayed with a polyurethane-silane composite coating.

[0015] Optionally, the system further comprises a fry state monitoring module.

[0016] The fry state monitoring module is in communication connection with the central control module.

[0017] The central control module is further used for acquiring fry state data through the fry state monitoring module when the pushing net (126) is controlled to move, and lowering the moving speed of the pushing net (126) and performing a preset alarm action when it is analyzed that the fry state is abnormal according to the fry state data.

[0018] Optionally, the fry state monitoring module comprises an acoustic array.

[0019] The acoustic array is used to capture the swimming sound print of the fish shoal and send it to the central control module.

[0020] The central control module is used to analyze the swimming sound print of the fish shoal, and when the analysis result shows that the frequency change rate of the high-frequency sound wave is greater than a preset threshold, it is determined that the fry state is abnormal.

[0021] Optionally, four environmental control modules (3) and water quality and fry growth condition monitoring modules (5) are installed on the fixed bin (11).

[0022] The water quality and fry growth condition monitoring module (5) is used to monitor the water quality parameters and fry growth conditions in real time, and four water quality and fry growth condition monitoring modules (5) are provided with detection grooves (51) which are in communication with the fry pond (12).

[0023] The fixed bin (11) is also provided with four opening and closing doors (13), and the four opening and closing doors (13) correspond one-to-one to the plurality of environmental control modules (3).

[0024] Optionally, the isolation plate (122) perpendicular to the sliding direction of the push motor (123) is symmetrically provided with a flow valve (124), and one push motor (123) drives two push frames (125) to move synchronously, and the two push motors (123) are in alternating motion.

[0025] Optionally, the auxiliary water pumping assembly comprises:

[0026] An auxiliary water pumping port (127) is slidingly arranged in the breeding bin, and the auxiliary water pumping port (127) floats in the breeding bin when it is not affected by external force, and at least one half of its position is located above the water surface.

[0027] A plurality of telescopic pipes (128) are equidistantly arranged on the auxiliary water pumping port (127).

[0028] A plurality of communication pipes (129) are fixed in the breeding bin, and the telescopic pipes (128) are slidingly arranged in the communication pipes (129).

[0029] Optionally, the filter assembly (23) comprises:

[0030] A base (231) is fixed in the fixed bin (11).

[0031] A centrifugal device (232) is fixed on the base (231) and driven by a centrifugal motor (233).

[0032] A filter bin (234) is fixed on the centrifugal device (232);

[0033] A filter screen (235) is obliquely and slidably arranged in the filter bin (234) and is provided with a shaking spring between the filter bin (234);

[0034] A circulating port (236) and an auxiliary circulating port (237) are arranged on the side wall of the filter bin (234) and are respectively communicated with the water pumping port and the communicating pipe (129);

[0035] A connecting bin (238) is fixed on one side of the base (231) and a slag collecting barrel (239) is slidably arranged in the connecting bin (238).

[0036] In the second aspect, the present application further provides a fish fry breeding method using the factory-like circulating water facility, which is applied to the fish fry breeding system using the factory-like circulating water facility as described above.

[0037] S1. Environmental regulation; water is first injected into the two breeding bins on one side of the driving motor (123) and is regulated through the environmental control module (3), and then the fish fry is put in;

[0038] S2. Breeding bin water change; the flow valve (124) is opened, and at the same time, the fish fry is driven to the flow valve (124) by the driving net (126) through the driving motor (123), so that the fish fry enters the other two breeding bins with water, and when the water levels in the four breeding bins are consistent, the flow valve (124) is closed, then the circulating water is injected into the breeding bin with fish fry, and the water in the breeding bin without fish fry is pumped and filtered, and the water change operation is completed;

[0039] S3. Cleaning operation; when the breeding bin needs to be cleaned, the breeding bin is first changed through the execution step S2, and at the same time of water change, the impurities suspended on the water surface are cleaned through the auxiliary water pumping port (127) to avoid flowing into the breeding bin with fish fry, and when the water levels in the four breeding bins are consistent, the flow valve (124) is closed, and the breeding bin to be cleaned is pumped and cleaned.

[0040] The present application adopts the above technical scheme, the seedling module can provide suitable growth space for seedling culture, the plurality of breeding bins can facilitate water changing operation, and the fish fry and water can be simultaneously replaced in position during water changing, thereby facilitating maintenance and cleaning of the breeding bin. Since the pushing net (126) is arranged in the pushing frame (125) and detachably connected with the pushing frame (125), the pushing net (126) can be conveniently cleaned, maintained and replaced in the later stage, the maintenance cost of the present application in the later stage is reduced, and since the mesh of the pushing net (126) is distributed in a dense upper and sparse lower manner, the upper dense mesh can slow down the water flow speed, avoid the fish fry from being scratched or stressed due to high-speed water flow impact, the lower sparse mesh can allow rapid drainage, form a laminar flow from top to bottom, and reduce the vortex suction effect on the fish fry, which makes the present application capable of reducing or even avoiding the occurrence of fish fry damage during water changing. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0042] Figure 1 It is a whole structure schematic diagram of a fish fry cultivation system using a factory-like circulating water facility;

[0043] Figure 2 It is a structure schematic diagram of a fish fry cultivation assembly;

[0044] Figure 3 It is a structure schematic diagram of a fixed bin;

[0045] Figure 4 It is a structure schematic diagram of a fish fry pool;

[0046] Figure 5 It is a structure schematic diagram of a filter assembly;

[0047] In the figure: 1, a breeding module; 2, a water quality treatment module; 3, an environment control module; 4, a feeding module; 5, a water quality and fry growth condition monitoring module; 11, a fixed bin; 12, a breeding pond; 13, a door; 121, a breeding bin; 122, a partition plate; 123, a pushing motor; 124, a circulation valve; 125, a pushing frame; 126, a pushing net; 127, an auxiliary pumping port; 128, an extension pipe; 129, a communication pipe; 21, a water pump; 22, a circulating water tank; 23, a filter assembly; 231, a base; 232, a centrifugal device; 233, a centrifugal motor; 234, a filter bin; 235, a filter screen; 236, a circulating port; 237, an auxiliary circulating port; 238, a connecting bin; 239, a slag collecting barrel; 51, a detection tank. DETAILED DESCRIPTION

[0048] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0049] REFERENCE Figures 1-5 The present application provides a fry cultivation system using a factory-like circulating water facility, comprising a central control module (not shown in the figure), a breeding module 1, a water quality treatment module 2, an environment control module 3 and a feeding module 4.

[0050] The breeding module 1 is used to accommodate fry and provide suitable growth space, and at least comprises a breeding assembly, which comprises a fixed bin 11 fixed on the ground, and a breeding pond 12 detachably installed in the fixed bin 11, the breeding pond 12 being in communication with the water quality treatment module 2; the water quality treatment module 2 at least comprises a water pump 21, a circulating water tank 22 and four filter assemblies 23; the filter assembly 23 is in communication with the breeding pond 12 through the water pump 21; the inlet of the circulating water tank 22 is in communication with the filter assembly 23; and the outlet of the circulating water tank 22 is in communication with the breeding pond 12 through the water pump 21; and the central control module is used to control the working state of the water pump 21.

[0051] The rearing pond 12 comprises a rearing bin 121, a partition plate 122, a pushing motor 123, a pushing frame 125, a pushing net 126 and an auxiliary water pumping assembly; the rearing bin 121 is fixed in the fixed bin 11; the partition plate 122 is configured as two and arranged in a cross shape in the rearing bin 121, so as to divide the rearing bin 121 into four rearing bins, and a water pumping opening is formed in the bottom of each of the four rearing bins and communicated with the filtering assembly 23; the pushing motor 123 is configured as two and symmetrically fixed on the partition plate 122; the pushing frame 125 is slidingly arranged in the rearing bin and driven by the pushing motor 123; the pushing net 126 is arranged in the pushing frame 125 and detachably connected with the pushing frame 125, and the mesh of the pushing net 126 is distributed in a dense upper and sparse lower manner, and the diameter of any mesh is smaller than the passing diameter of the fry; the auxiliary water pumping assembly is installed on the inner wall of the rearing bin and communicated with the filtering assembly 23; and the central control module is further used for controlling the working state of the pushing motor 123. Here, since the pushing net 126 is arranged in the pushing frame 125 and detachably connected with the pushing frame 125, the pushing net 126 can be conveniently cleaned, maintained and replaced in the later period, so that the maintenance cost of the rearing pond 12 in the later period is reduced, and since the mesh of the pushing net 126 is distributed in a dense upper and sparse lower manner, the dense upper mesh can slow down the water flow speed, so as to avoid that the fry is scratched or stressed due to the impact of high-speed water flow, and the sparse lower mesh can allow rapid drainage, so as to form a laminar flow from top to bottom and reduce the entrainment of the fry by vortex, which makes the rearing pond 12 capable of reducing or even avoiding the damage of the fry during water changing.

[0052] The water quality treatment module 2 is used for performing deep treatment on the circulating water in response to the control instruction of the central control module, so as to ensure that the water quality is always kept in an optimal state.

[0053] The environment control module 3 is used for accurately controlling the water temperature, pH value and dissolved oxygen, which are key parameters, in response to the control instruction of the central control module, so as to provide the most suitable growth environment for the fry.

[0054] The feeding module 4 is used for realizing precise feeding in response to the control instruction of the central control module, so as to timely and quantitatively feed the fry according to the growth demand and nutritional demand of the fry.

[0055] In the embodiment of the present application, the number of the pushing nets 126 is multiple, and the mesh densities of different pushing nets 126 are different. In this way, the rearing pond 12 can be adapted to different fish species, such as salmon fry requiring denser mesh and carp fry requiring sparser mesh.

[0056] In the embodiment of the present application, the surface of the pushing net 126 is sprayed with a polyurethane-silane composite coating.

[0057] The polyurethane-silane composite coating has the characteristics of small friction coefficient (the friction coefficient is less than 0.1) close to the friction value of fish body mucus, which is beneficial to reduce the friction between the fish and the pushing net 126 during water changing, and avoid mechanical damage of the fry; and the polyurethane-silane composite coating also has antibacterial performance, can inhibit the attachment of streptococcus, and reduce the risk of fry infection; in addition, the polyurethane-silane composite coating also has the characteristics of color development under visible light to prompt wear (the coating fades, and the pushing net 126 needs to be replaced), which is convenient for the staff to find that the pushing net 126 is seriously worn out and replace the pushing net 126 in time.

[0058] In the embodiment of the present application, the fry breeding system using the factory circulating water facility can further include a fry state monitoring module.

[0059] The fry state monitoring module is in communication connection with the central control module.

[0060] The central control module is further configured to acquire fry state data through the fry state monitoring module when controlling the movement of the pushing net 126, and reduce the moving speed of the pushing net 126 when analyzing that the fry state is abnormal according to the fry state data, reduce the mechanical damage degree of the fry, and execute a preset alarm action, so that the staff can find the abnormal state of the fry in time according to the alarm information. Here, the execution of the preset alarm action can be sending alarm information to a preset terminal.

[0061] In the embodiment of the present application, the fry state monitoring module includes an acoustic array.

[0062] The acoustic array is configured to capture fish school movement voiceprints and send them to the central control module.

[0063] The central control module is configured to analyze the fish school movement voiceprints, and when the analysis result shows that the frequency change rate of high-frequency sound waves is greater than a preset threshold value, it indicates that the fry has group panic due to mechanical driving (high-frequency sound waves are related to rapid tail swing and collision), and the fry state is determined to be abnormal. For example, when the analysis result shows that the pulse number of high-frequency sound waves (>500Hz) per unit time increases from 10 times per second to 50 times per second, it is determined that the fry state is abnormal.

[0064] In the embodiment of the present application, four environment control modules 3 and water quality and fry growth condition monitoring modules 5 are installed on the fixed bin 11.

[0065] The water quality and fry growth condition monitoring module 5 is configured to monitor water quality parameters and fry growth conditions in real time, and detection grooves 51 are formed on the four water quality and fry growth condition monitoring modules 5, which are in communication with the fry pond 12.

[0066] The fixed bin 11 is further provided with four open-close doors 13 corresponding to the plurality of environment control modules 3.

[0067] That is, the four breeding bins can be controlled respectively by the four environment control modules 3 and the water quality and fry growth condition monitoring module 5, so that the parameters in each breeding bin can be adjusted in real time, and the survival rate of the fry is improved.

[0068] In the embodiment of the application, the flow valve 124 is symmetrically installed on the isolation plate 122 perpendicular to the sliding direction of the push motor 123, one push motor 123 drives two push frames 125 to move synchronously, and the two push motors 123 are in alternate motion.

[0069] That is, the water changing operation can be facilitated by the plurality of breeding bins, and the fry and water can be simultaneously replaced in position when the water is changed, so that the maintenance and cleaning of the breeding bin are facilitated.

[0070] In the embodiment of the application, the auxiliary water pumping assembly comprises:

[0071] The auxiliary water pumping port 127 is slidingly arranged in the breeding bin, and the auxiliary water pumping port 127 floats in the breeding bin when not affected by external force, and at least one half of the auxiliary water pumping port 127 is located above the water surface.

[0072] The telescopic pipe 128 is at least three, and is equidistantly arranged on the auxiliary water pumping port 127.

[0073] The communication pipe 129 is at least three, and is fixed in the breeding bin, and the telescopic pipe 128 is slidingly arranged in the communication pipe 129.

[0074] In the embodiment of the application, the filtering assembly 23 comprises:

[0075] The base 231 is fixed in the fixed bin 11.

[0076] The centrifugal device 232 is fixed on the base 231 and is driven by the centrifugal motor 233.

[0077] The filtering bin 234 is fixed on the centrifugal device 232.

[0078] The filter screen 235 is obliquely and slidably arranged in the filter bin 234, and a shaking spring is arranged between the filter screen 235 and the filter bin 234.

[0079] The circulating port 236 and the auxiliary circulating port 237 are arranged on the side wall of the filter bin 234 and are communicated with the water pumping port and the communicating pipe 129 respectively.

[0080] The connecting bin 238 is fixed on one side of the base 231, and the slag collecting barrel 239 is slidably arranged in the connecting bin 238.

[0081] That is to say, when the water pump 21 pumps water into the filter bin 234, the water can be preliminarily filtered by the filter screen 235, mainly filtering large-particle food residues, and the filter screen 235 is shaken by the shaking spring and the impact of water during the filtering process, so that the large-particle food residues can enter the slag collecting barrel 239 for collection, and the slag collecting barrel 239 can be taken out by sliding, so that the residues can be cleaned, and the preliminarily filtered water can be further filtered and separated by the centrifugal device 232, so that the filtering degree of the water is improved, and the filtered water enters the circulating water tank 22 for circulation.

[0082] Based on the overall inventive concept, the present application also provides a fish fry breeding method using the factory-like circulating water facility, which is applied to the fish fry breeding system using the factory-like circulating water facility as described above.

[0083] S1. Environmental adjustment; water is first injected into the two breeding bins on one side of the driving motor 123, and is adjusted by the environmental control module 3, and then the fish fry is put in.

[0084] S2. Breeding bin water changing; the flow valve 124 is opened, and the driving net 126 is driven by the driving motor 123 to drive the fish fry to the flow valve 124, so that the fish fry enters the other two breeding bins with water, and when the water levels in the four breeding bins are consistent, the flow valve 124 is closed, then the circulating water is injected into the breeding bin with fish fry, and the water in the breeding bin without fish fry is pumped out for filtration, and the water changing operation is completed.

[0085] S3. Cleaning operation; when the breeding bin needs to be cleaned, the breeding bin is first water-changed by performing part of the process of step S2, and the impurities suspended on the water surface are cleaned by the auxiliary water pumping port 127 at the same time of water changing, so as to avoid flowing into the breeding bin with fish fry, until the flow valve 124 is closed when the water levels in the four breeding bins are consistent, and the breeding bin to be cleaned is pumped and cleaned.

[0086] It can be understood that the same or similar parts in the above embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0087] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0088] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A fish fry rearing system employing a factory-style recirculating aquaculture system, characterized in that, include: The central control module, seedling cultivation module (1), water treatment module (2), environmental control module (3), and feeding module (4) are all included. The seedling module (1) is used to accommodate fish fry and provide a suitable growth space. It includes at least a seedling component, which includes a fixed chamber (11) fixed on the ground. A seedling pond (12) is detachably installed in the fixed chamber (11). The seedling pond (12) is connected to the water treatment module (2). The water treatment module (2) includes at least a water pump (21), a circulating water tank (22), and four filter components (23). The filter components (23) are connected to the seedling pond (12) via the water pump (21). The inlet of the circulating water tank (22) is connected to the filter components (23), and the outlet of the circulating water tank (22) is connected to the seedling pond (12) via the water pump (21). The central control module is used to control the working status of the water pump (21). The seedling tank (12) includes a seedling chamber (121), a partition plate (122), a drive motor (123), a drive frame (125), a drive net (126), and an auxiliary water pumping assembly; the seedling chamber (121) is fixed inside the fixed chamber (11); two partition plates (122) are configured and arranged in a cross shape inside the seedling chamber (121), dividing the seedling chamber (121) into four breeding chambers, and each of the four breeding chambers has a water pump at the bottom, which is connected to the filter assembly (23); two drive motors (123) are configured. The components are symmetrically fixed on the isolation plate (122); the push frame (125) is slidably disposed in the breeding chamber and driven by the push motor (123); the push net (126) is disposed in the push frame (125) and is detachably connected to the push frame (125), and the mesh of the push net (126) is dense at the top and sparse at the bottom, and the diameter of any mesh is smaller than the diameter through which the fish fry pass; the auxiliary water pumping component is installed on the inner wall of the breeding chamber and is connected to the filter component (23); the central control module is also used to control the working status of the push motor (123); The water treatment module (2) is used to respond to the control commands of the central control module to perform in-depth treatment of the circulating water to ensure that the water quality is always kept in the best state. The environmental control module (3) is used to respond to the control commands of the central control module and precisely control key parameters such as water temperature, pH value and dissolved oxygen to provide the most suitable growth environment for fish fry; The feeding module (4) is used to respond to the control commands of the central control module to achieve precise feeding, and to feed the fish fry in a timely and quantitative manner according to their growth and nutritional needs. The fish fry rearing system using factory-style recirculating water facilities also includes: a fish fry status monitoring module; The fish fry status monitoring module is communicatively connected to the central control module; The central control module is also used to obtain fish fry status data through the fish fry status monitoring module when controlling the movement of the push net (126), and when the fish fry status is found to be abnormal based on the fish fry status data, reduce the movement speed of the push net (126) and execute a preset alarm action. The fish fry status monitoring module includes an acoustic array; The acoustic array is used to capture the acoustic patterns of fish swimming and send them to the central control module; The central control module is used to analyze the swimming sound patterns of the fish school. When the analysis results show that the frequency change rate of the high-frequency sound wave is greater than a preset threshold, it is determined that the fish fry are in an abnormal state.

2. The fish fry rearing system using factory-style recirculating aquaculture systems according to claim 1, characterized in that, The number of drive networks (126) is multiple; Different push nets (126) have different mesh densities.

3. The fish fry rearing system using factory-style recirculating aquaculture systems according to claim 1, characterized in that, The surface of the push net (126) is coated with a polyurethane-silane composite coating.

4. The fish fry rearing system using factory-style recirculating aquaculture systems according to claim 1, characterized in that, The fixed container (11) is equipped with four environmental control modules (3) and a water quality and fry growth monitoring module (5); The water quality and fry growth status monitoring module (5) is used to monitor water quality parameters and fry growth status in real time. Each of the four water quality and fry growth status monitoring modules (5) is equipped with a detection slot (51), which is connected to the nursery pond (12). The fixed compartment (11) is also equipped with four opening and closing doors (13), which correspond one-to-one with multiple environmental control modules (3).

5. The fish fry rearing system using factory-style recirculating aquaculture systems according to claim 1, characterized in that, A flow valve (124) is symmetrically installed on an isolation plate (122) perpendicular to the sliding direction of the push motor (123), and one push motor (123) drives two push frames (125) to move synchronously, and the two push motors (123) move alternately.

6. The fish fry rearing system using factory-style recirculating aquaculture systems according to claim 1, characterized in that, The auxiliary pumping assembly includes: An auxiliary water inlet (127) is slidably disposed in the aquaculture chamber. The auxiliary water inlet (127) floats in the aquaculture chamber when not affected by external forces, and at least half of its position is located on the water surface. At least three telescopic pipes (128) are equidistantly arranged on the auxiliary water inlet (127); At least three connecting pipes (129) are fixed inside the breeding shed, and telescopic pipes (128) are slidably disposed inside the connecting pipes (129).

7. The fish fry rearing system using a factory-style recirculating aquaculture system according to claim 6, characterized in that, The filter component (23) includes: The base (231) is fixed inside the fixed compartment (11); The centrifuge (232) is fixed on the base (231) and driven by the centrifuge motor (233); The filter chamber (234) is fixed on the centrifuge (232); The filter screen (235) is tilted and slidably disposed in the filter chamber (234), and a vibrating spring is provided between the filter screen (234) and the filter chamber (234); The circulation port (236) and the auxiliary circulation port (237) are opened on the side wall of the filter chamber (234) and are respectively connected to the water inlet and the connecting pipe (129); The connecting compartment (238) is fixed to one side of the base (231), and a slag collection bucket (239) is slidably installed inside it.

8. A method for raising fish fry using a factory-style recirculating aquaculture system, characterized in that, The method for raising fish fry using a factory-style recirculating aquaculture system, applicable to any one of claims 1 to 7, comprises: S1. Environmental adjustment; First, water is injected into the two breeding chambers located on one side of a drive motor (123), and the environmental control module (3) is used for adjustment, and then the fish fry are introduced; S2. Change the water in the breeding tank; open the flow valve (124), and at the same time drive the motor (123) to drive the net (126) to the flow valve (124) so ​​that the fish fry enter the other two breeding tanks with the water. When the water level in the four breeding tanks is the same, close the flow valve (124). Then inject circulating water into the breeding tank with fish fry and extract and filter the water in the breeding tank without fish fry to complete the water change operation. S3. Cleaning operation; When it is necessary to clean the breeding tank, first change the water in the breeding tank by performing step S2, and at the same time, clean the impurities suspended on the water surface through the auxiliary water inlet (127) to prevent them from flowing into the breeding tank with fish fry. When the water level in the four breeding tanks is the same, close the flow valve (124) and pump water and clean the breeding tank to be cleaned.

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